Answer:
Materia es todo aquello que nos rodea, ocupa un lugar en el espacio, y tiene masa. En nuestro planeta, la materia se encuentra en tres estado: gaseoso, líquido y sólido. ... Esta masa sólida es llamada geosfera. En estos tres estados de la materia existe un patrón común: en todos, la materia está formada por moléculas.
Explanation:
No soy española~
acabo de traducir
T-T
The protons are equivalent to the atomic number, so we can determine that the element being expressed here is Magnesium. If you are ever stuck on what element you are finding your information from, just remember that the number of protons is the exact same as the atomic number in ANY situation :)
The charge of magensium is +2, with an atomic mass of 24. So A would be your answer :)
Pebble in a sling shot!! And I believe the boulder falling !
it is important to check the conductivity and pH of pure water to:
1- to check the purity of water and if it healthy or not , and the water source.
2- we have to measure the PH to know the alkalinity or acidity of water. If the PH > 7 so it is acidic , if PH < 7 so it is alkaline.
3- we have to measure the conductivity of the water as it is an indication for the impurity level. and it shouldn't be high to keep the water healthy.
